Structure for preventing slab staggering and slurry leakage of construction joint of elevator shaft mold
By using aluminum alloy templates, trapezoidal PVC strips and sponge strips, as well as upper and lower support plates in the elevator shaft mold construction, the problem of slurry leakage in the construction joints is solved and the forming quality of the elevator shaft wall is improved.
Patent Information
- Application Number
- CN202422458188.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-11
AI Technical Summary
During the construction of elevator shaft molds, there are frequent problems of misplaced tables and slurry leakage at the construction joints, which is mainly due to the inadequate formwork reinforcement measures, resulting in gaps between the formwork.
Aluminum alloy formwork is used to replace traditional wooden formwork, and trapezoidal PVC pressing strips are pre-installed on the elevator shaft mold to form a trapezoidal port and paste the sponge strips. Combined with the fixing measures of the upper support plate and the lower hanging plate to ensure the quality of the concrete forming.
Effectively prevent slurry leakage, improve the molding effect of the construction joint position, and ensure the flatness and construction quality of the elevator shaft wall.
Smart Images
Figure CN223151616U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, and particularly relates to a structure for preventing stepped joint and slurry leakage at the construction joint of an elevator shaft formwork. Background Art
[0002] During the construction of the elevator shaft formwork, problems such as stepped joints and slurry leakage frequently occur at the construction joint positions. The root cause lies in the inadequate formwork reinforcement measures at the construction joint. The traditional method is to use wooden formwork splicing, which often leads to gaps between the formworks due to improper reinforcement strength (too tight or too loose), thus causing the above-mentioned quality problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide a structure for preventing stepped joint and slurry leakage at the construction joint of an elevator shaft formwork, and solve the problems of frequent stepped joints and slurry leakage at the construction joint positions during the construction of the elevator shaft formwork.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A structure for preventing stepped joint and slurry leakage at the construction joint of an elevator shaft formwork includes an elevator shaft formwork arranged on the inner side of the elevator shaft, a core tube aluminum formwork arranged on the outer side of the elevator shaft. Both the elevator shaft formwork and the core tube aluminum formwork are aluminum alloy formworks; concrete is poured between the elevator shaft formwork and the core tube aluminum formwork to form the elevator shaft wall; before the concrete pouring, a circle of trapezoidal PVC pressing strips is pre-installed at the upper opening of the elevator shaft formwork. After the concrete pouring operation of this layer is completed and the elevator shaft formwork is hoisted and moved upward to the upper layer, a trapezoidal tongue-and-groove is formed at the position of the trapezoidal PVC pressing strip, and a sponge strip is pasted at the trapezoidal tongue-and-groove; a circle of upper support plates is supported above the elevator shaft formwork, and a circle of lower hanging plates is hung below the elevator shaft formwork.
[0006] A further preferred technical solution: The longitudinal section of the trapezoidal PVC pressing strip is a right trapezoid; the lower bottom surface of the right trapezoid is in close contact with the elevator shaft formwork, the upper bottom surface faces outward, the vertical waist surface faces upward and is flush with the top surface of the structure surface, and the inclined waist surface faces downward.
[0007] A further preferred technical solution: The lower bottom length of the trapezoidal PVC pressing strip is 40 mm, and the vertical waist length is 20 mm.
[0008] A further preferred technical solution: The height of the upper support plate is greater than 250 mm.
[0009] A further preferred technical solution: The height of the lower hanging plate is 250 mm.
[0010] A further preferred technical solution: A first steel backstrap is arranged on the outer side of the elevator shaft formwork, a second steel backstrap is arranged on the outer side of the core tube aluminum formwork, and the first steel backstrap and the second steel backstrap are penetrated and connected by a screw rod and fastened by a nut.
[0011] A further preferred technical solution: A gasket is arranged inside the nut.
[0012] Compared with the prior art, the utility model has the following characteristics and beneficial effects:
[0013] 1. A trapezoidal PVC strip with a specification of 20×40mm is pre-installed on the elevator shaft formwork. After the concrete pouring operation of this layer is completed, the elevator shaft formwork 1 is hoisted and moved upward to the upper layer; at this time, a trapezoidal keyway with a size of 20×40mm will be naturally formed at the construction joint position; to further improve the construction quality, a sponge strip is pasted at this trapezoidal keyway to effectively prevent the occurrence of slurry leakage.
[0014] 2. An upper support plate is supported above the elevator shaft formwork, and a lower hanging plate is hung and firmly fixed below the elevator shaft formwork; the flatness of the cast-in-place concrete elevator shaft wall is improved, and at the same time, problems such as slurry leakage and dripping are further prevented. Description of the Drawings
[0015] Figure 1 is a plan view of the anti-offset and anti-slurry leakage structure of the construction joint of the elevator shaft formwork of the utility model;
[0016] Figure 2 is a longitudinal sectional view of the anti-offset and anti-slurry leakage structure of the construction joint of the elevator shaft formwork of the utility model;
[0017] Reference numerals: 1 - elevator shaft formwork, 2 - core tube aluminum formwork, 3 - elevator shaft wall, 4 - trapezoidal PVC strip, 5 - structural surface, 6 - upper support plate, 7 - gasket, 8 - screw, 9 - first steel backing strip, 10 - second steel backing strip, 11 - nut. Detailed Embodiments
[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0019] To ensure that the construction joint position of the elevator shaft reaches an excellent forming effect after pouring and effectively avoid the occurrence of offset and leakage problems, this article analyzes the elevator shaft formwork construction to provide a set of scientific, rigorous and practical reference for engineering technicians; to solve this problem, based on past construction joint treatment experience, an optimized structural solution is proposed in this article.
[0020] See Figure 1 and Figure 2As shown in the figure, a construction joint anti-offset and anti-leakage structure for an elevator shaft formwork of the present utility model includes an elevator shaft formwork 1 provided on the inner side of the elevator shaft. A first steel backstrap 9 is provided on the outer side of the elevator shaft formwork 1, and a core tube aluminum formwork 2 is provided on the outer side of the elevator shaft. A second steel backstrap 10 is provided on the outer side of the core tube aluminum formwork 2. The first steel backstrap 9 and the second steel backstrap 10 are penetrated and connected by a screw 8 and fastened by a nut 11. A gasket 7 is provided inside the nut 11;
[0021] Both the elevator shaft formwork 1 and the core tube aluminum formwork 2 are aluminum alloy formworks;
[0022] Concrete is poured between the elevator shaft formwork 1 and the core tube aluminum formwork 2 to form an elevator shaft wall 3;
[0023] Before concrete pouring, a circular trapezoidal PVC strip 4 is pre-installed at the upper opening of the elevator shaft formwork 1. The longitudinal section of the trapezoidal PVC strip 4 is a right trapezoid. The lower bottom surface of the right trapezoid is in close contact with the elevator shaft formwork 1, the upper bottom surface faces outward, the straight waist surface faces upward and is flush with the top surface of the structural surface 5, and the inclined waist surface faces downward. The lower bottom length of the trapezoidal PVC strip 4 is 40 mm and the straight waist length is 20 mm;
[0024] After the concrete pouring operation of this layer is completed and the elevator shaft formwork 1 is hoisted and moved upward to the upper layer, a trapezoidal keyway is formed at the position of the trapezoidal PVC strip 4, and a sponge strip is pasted at the trapezoidal keyway;
[0025] A circular upper support plate 6 is provided above the elevator shaft formwork 1. The height of the upper support plate 6 is greater than 250 mm, and the height of the part of the upper support plate 6 protruding above the structural surface is 250 mm. A circular lower hanging plate is hung below the elevator shaft formwork 1, and the height of the lower hanging plate is 250 mm;
[0026] A construction method for a construction joint anti-offset and anti-leakage structure of an elevator shaft formwork of the present utility model:
[0027] 1. Use the elevator shaft formwork 1 and the core tube aluminum formwork 2 made of aluminum alloy to replace the traditional wooden formwork for formwork construction at the elevator shaft position; the advantage of this change is that the elevator shaft formwork 1 and the core tube aluminum formwork 2 can ensure that the elevator shaft wall is formed in one time, thus significantly reducing the concrete quality problems caused by formwork joints.
[0028] 2. According to the actual floor height of the floor, reasonably set the construction joint position in the elevator shaft; at the same time, a trapezoidal PVC strip with a specification of 20×40 mm is pre-installed on the elevator shaft formwork 1.
[0029] 3. After the concrete pouring operation of this layer is completed, hoist and move the elevator shaft formwork 1 upward to the upper layer; at this time, a 20×40 mm trapezoidal keyway will be naturally formed at the construction joint position; to further improve the construction quality, a sponge strip is pasted at this trapezoidal keyway to effectively prevent leakage of slurry.
[0030] IV. Support the upper support plate 6 above the elevator shaft formwork 1, and hang and firmly fix the lower hanging plate below the elevator shaft formwork 1; improve the flatness of the cast-in-place concrete elevator shaft wall, and at the same time further prevent problems such as slurry leakage and dripping.
[0031] Through the implementation of the above optimization measures, the forming effect of the construction joint position of the elevator shaft can be significantly improved, providing a strong guarantee for the smooth progress of the engineering project.
[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An anti-displacement and slurry leakage structure for construction joints of an elevator shaft formwork, characterized in that: It includes an elevator shaft formwork (1) installed on the inner side of the elevator shaft, a core tube aluminum formwork (2) installed on the outer side of the elevator shaft. Both the elevator shaft formwork (1) and the core tube aluminum formwork (2) are aluminum alloy formworks; Concrete is poured between the elevator shaft formwork (1) and the core tube aluminum formwork (2) to form an elevator shaft wall (3); Before concrete pouring, a circular trapezoidal PVC strip (4) is pre-installed at the upper opening of the elevator shaft formwork (1); After the concrete pouring operation of this layer is completed and the elevator shaft formwork (1) is hoisted and moved upward to the upper layer, a trapezoidal tongue-and-groove is formed at the position of the trapezoidal PVC strip (4), and a sponge strip is pasted at the trapezoidal tongue-and-groove; A circular upper support plate (6) is supported above the elevator shaft formwork (1), and a circular lower hanging plate is hung below the elevator shaft formwork (1).
2. The anti-offset and slurry leakage structure for the construction joint of the elevator shaft formwork according to claim 1, characterized in that: The longitudinal section of the trapezoidal PVC strip (4) is a right trapezoid; the lower bottom surface of the right trapezoid is in close contact with the elevator shaft formwork (1), the upper bottom surface faces outward, the vertical waist surface faces upward and is flush with the top surface of the structural surface (5), and the inclined waist surface faces downward.
3. The anti-displacement and leakage prevention structure for the construction joint of the elevator shaft formwork according to claim 1, characterized in that: The lower bottom length of the trapezoidal PVC strip (4) is 40 mm, and the vertical waist length is 20 mm.
4. The anti-offset and leakage prevention structure for the construction joint of the elevator shaft formwork according to claim 1, characterized in that: The height of the upper support plate (6) is greater than 250 mm.
5. The elevator shaft formwork construction joint anti-offset and anti-leakage structure according to claim 1, characterized in that: The height of the lower hanging plate is 250 mm.
6. The elevator shaft formwork construction joint anti-offset and anti-leakage structure according to claim 1, characterized in that: A first steel backing strip (9) is provided on the outer side of the elevator shaft formwork (1), and a second steel backing strip (10) is provided on the outer side of the core tube aluminum formwork (2). The first steel backing strip (9) and the second steel backing strip (10) are penetrated and connected by a screw rod (8) and fastened by a nut (11).
7. The elevator shaft formwork construction joint anti-offset and anti-leakage structure according to claim 6, characterized in that: A gasket (7) is provided inside the nut (11).